Arabic KeyBoard - Developed by bluePlum
A simple App to provide the ability to write Arabic letters using the special-made Arabic keyboard.
The original English keyboard is still available and triggered by tapping on the textbox and can be hidden again by tapping anywhere else to reveal the Arabic keyboard

Vietnamese Keyboard - This is the first Vietnamese Keyboard that people use for input Vietnamese in Vietnam. Simple, stable, fast, and effect, support two Vietnamese Unicode standards and three methods of typing Vietnamese

ECTACO Czech Language Support translates system messages, names of tabs and buttons, menus and prompts, names of system folders and other components of Pocket PC operating system.
Czech Language Support features two additional methods of input:
On-screen keyboard with the Czech layout suitable for all the applications requiring national characters